500550055551 has 48 divisors (see below), whose sum is σ = 890048251456. Its totient is φ = 263972556288.

The previous prime is 500550055543. The next prime is 500550055559. The reversal of 500550055551 is 155550055005.

It is a happy number.

500550055551 is a `hidden beast` number, since 5 + 0 + 0 + 5 + 50 + 0 + 55 + 551 = 666.

It is an interprime number because it is at equal distance from previous prime (500550055543) and next prime (500550055559).

It is not a de Polignac number, because 500550055551 - 2³ = 500550055543 is a prime.

It is a super-2 number, since 2×500550055551² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500550055559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4127781 + ... + 4247313.

Almost surely, 2^500550055551 is an apocalyptic number.

500550055551 is a deficient number, since it is larger than the sum of its proper divisors (389498195905).

500550055551 is a wasteful number, since it uses less digits than its factorization.

500550055551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124672 (or 124669 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 500550055551 in words is "five hundred billion, five hundred fifty million, fifty-five thousand, five hundred fifty-one".